Copyright Thomas Hager (duke at sigsegv dot at). Licensed under CC-BY-NC-SA unported 3.0, http://creativecommons.org/licenses/by-nc-sa/3.0/

Assumptions:

Please adjust the instructions below to reflect your setup (users and paths).

Edit your .gitolite.rc and add

$ENV{PATH} .= ":/opt/git/bin";

at the very top (as described in t/smart-http.root-setup).

Next, check which document root your Apache's suexec accepts:

# suexec -V
 -D AP_DOC_ROOT="/var/www"
 -D AP_GID_MIN=100
 -D AP_HTTPD_USER="www"
 -D AP_LOG_EXEC="/var/log/apache/suexec.log"
 -D AP_SAFE_PATH="/usr/local/bin:/usr/bin:/bin"
 -D AP_UID_MIN=100
 -D AP_USERDIR_SUFFIX="public_html"

We're interested in AP_DOC_ROOT, which is set to /var/www in our case.

Create a bin and a git directory in AP_DOC_ROOT:

install -d -m 0755 -o git -g git /var/www/bin
install -d -m 0755 -o www -g www /var/www/git

/var/www/git is just a dummy directory used as Apache's document root (see below).

Next, create a shell script inside /var/www/bin named gitolite-suexec-wrapper.sh, with mode 0700 and owned by user and group git. Add the following content:

#!/bin/bash
#
# Suexec wrapper for gitolite-shell
#

export GIT_PROJECT_ROOT="/opt/git/repositories"
export GITOLITE_HTTP_HOME="/opt/git"

exec ${GITOLITE_HTTP_HOME}/gitolite-source/src/gitolite-shell

Edit your Apache's config to add http pull/push support, preferably in a dedicated VirtualHost section:

<VirtualHost *:80>
    ServerName        git.example.com
    ServerAlias       git
    ServerAdmin       you@example.com

    DocumentRoot /var/www/git
    <Directory /var/www/git>
        Options       None
        AllowOverride none
        Order         allow,deny
        Allow         from all
    </Directory>

    SuexecUserGroup git git
    ScriptAlias /git/ /var/www/bin/gitolite-suexec-wrapper.sh/
    ScriptAlias /gitmob/ /var/www/bin/gitolite-suexec-wrapper.sh/

    <Location /git>
        AuthType Basic
        AuthName "Git Access"
        Require valid-user
        AuthUserFile /etc/apache/git.passwd
    </Location>
</VirtualHost>

This Apache config is just an example, you probably should adapt the authentication section and use https instead of http!

Finally, add an R = daemon access rule to all repositories you want to make available via http.